Simon and his friends are working on an experiment to determine the most common blood type group in california. which of these methods would be the best form of data collection?
a. survey their own family members to find out their individual blood types; this data would represent blood type groups in the entire population of california.
b. survey an area with a high latino population to find out the blood type of every individual; this data would represent blood type groups in the entire population of california.
c. offer a free blood–type testing camp in a school laboratory and collect data; this data would represent blood type groups in the entire population of california.

Alichen is an organism that structurally appears to be a single organism. but a lichen is actually two different organisms—a fungus and green algae—living together as one organism. the fungal partner derives its nutrition from the photosynthesizing algae. how does a lichen differ in its photosynthetic activity from elysia chlorotica, the sea slug that’s considered to be a photosynthesizing animal? a. in lichens, the fungi photosynthesize on their own, while elysia chlorotica forms a relationship with a photosynthesizing plant. b. in lichens, the relationship with the algae lasts throughout the life cycle, but in elysia chlorotica, the relationship occurs only during the immature juvenile stage of the slug’s life cycle. c. lichens can photosynthesize only because of the living algal partner, while elysia chlorotica incorporates chloroplasts from algae into its cells. d. in lichens, the association between the fungi and algae is permanent, while elysia chlorotica associates with a photosynthesizing organism only when it requires food.

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?